add unit tests for core game, bible, share, and stats utilities

146 tests covering evaluateGuess, grading, ordinals, bible data
integrity, section counts, share text generation, and stat
string helpers. Also fixes toOrdinal for 111-113 (was using
>= 11 && <= 13 instead of % 100 check).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/lib/utils/game.ts

@@ -79,7 +79,7 @@ export function getNextGradeMessage(numGuesses: number): string {
 }
 
 export function toOrdinal(n: number): string {
-	if (n >= 11 && n <= 13) {
+	if (n % 100 >= 11 && n % 100 <= 13) {
 		return `${n}th`;
 	}
 	const mod = n % 10;